AQS and GREENGUARD are the market leaders in North America for product emissions testing and third-party indoor air quality certification, the release noted.

AQS helps manufacturers identify the chemicals being emitted from their products using state-of-the-art equipment and testing laboratories, while GREENGUARD certification helps manufacturers communicate their sustainability message to the marketplace by providing assurance that their products have been independently evaluated for low chemical emissions, the release stated.

"This acquisition combines AQS''s world-class technology and expertise, as well as GREENGUARD''s brand recognition and scientific rigor, with UL''s trusted history of standards development, testing, and compliance to create a more comprehensive solution for testing and certification," said Steve Wenc, president of UL Environment.

"Together, we''ll help consumers, regulators and other interested parties make informed product purchases by providing clarity around indoor air quality claims," Wenc added.